The notice to Sisodia was sent days after Chief Minister Arvind Kejriwal was questioned for over three hours in connection with this case.

The Delhi chief secretary was allegedly attacked during a meeting at Kejriwal’s official residence on February 19.

According to Delhi Police, the chief minister was present when the alleged assault took place.

The police have already questioned 11 AAP MLAs present at the chief minister’s residence for the meeting.

Two of the party MLAs—Amantullah Khan and Prakash Jarwal—were arrested in the case.

Last month, Kejriwal’s private secretary Bibhav Kumar and party volunteer Vivek Kumar were also questioned in connection with the case.

Kejriwal, his former advisor V K Jain and Sisodia were also present in the meeting. Jain was also questioned in the case.

On February 23, a police team had examined the CCTV system installed at the chief minister’s residence in the Civil Lines area and seized the hard disk. The forensic report on the hard disk is still awaited.

The alleged assault on the chief secretary had triggered a bitter tussle between the Delhi government and its bureaucrats.